Two double killings, including the horrific Clackamas Town Center shooting, boosted the number of homicides last year in Clackamas County to 10, more than double the annual average of four over the past few years. Once again, most of the victims and their killers knew one another -- sometimes well.

View full sizeTerry Lee Daniel Sr. (right) and his longtime live-in girlfriend, Lisa Stevie Haynes, at a family function.Courtesy of Jacob Fernandez

Lisa Stevie Haynes, 55, was found shot to death Feb. 12 in the home she shared with her longtime boyfriend in the Altramar I Mobile Home Park off Southeast Roethe Road, in the Oak Grove area south of Milwaukie. Status: Terry Lee Daniel Sr., 61, has been charged with murder after shooting himself in the chest in what he described as an attempted murder-suicide. Daniel, a former Multnomah Athletic Club custodian, told police he and Haynes, a former truck driver, both suffered from severe disabilities and were unable to work. An ever-tightening financial squeeze and a lack of options drove them to plan their own deaths. Daniel is to be tried March 5.

Saundra Sue Wallace, 71, and grandson Nicolas Brian Juarez, 16, of Mountain View, Calif., were found shot to death June 4 outside Wallace's home on Indian Springs Circle, in the unincorporated Lake Grove area outside Lake Oswego.

Status: Wallace's son, Adrien Graham Wallace, 41, who lived with his mother, has been charged with two counts of aggravated murder in the killings. Adrien Wallace allegedly admitted to police that he shot his mother, a retired clinical social worker, and his nephew in the face with a hunting rifle as they tried to leave for a weeklong family reunion in California. Wallace, described by a cousin as "antisocial," is set to go to trial Oct. 1. Michelle Leigh Walker, 41, a single mom, was found bludgeoned to death July 8 in her apartment in the Raffaell Villa Apartments off Southeast Roethe Road, in the Oak Grove area south of Milwaukie. Status: Daniel James Seale, 41, was sentenced to life in prison after pleading guilty to killing Walker with a hammer, following a July 6 pickup basketball game at the apartment complex where he did handyman jobs for tenants. At one point, after learning Seale and his wife were living in a tent, Walker invited them to move into a spare bedroom. But Walker's mother put her foot down. Seale, a registered sex offender who also has prior convictions for burglary and theft, was arrested July 26.

Norma Jean Perrone, 62, of Happy Valley, human resources coordinator for a Portland law firm, was shot to death Aug. 5 in the home she shared with her daughter, Gina Marie Perrone, on Southeast Hobart Court. Gina Perrone, 29, also was shot but survived to call 9-1-1, identifying her boyfriend - father of her baby - as the shooter.

Status: Jason Duane Hogan Jr., 33, who formerly lived with the Perrones, has been charged with murder, attempted aggravated murder, first-degree assault with a firearm and being a felon in possession of a firearm. He was arrested at the Beaverton Transit Center two days after the shooting. Hogan is set to be tried Sept. 27.

Fredrick Wheeler "Fritz" Hayes Jr., 57, a retired cyber-engineer, was slashed to death during a Sept. 17 home-invasion robbery on Atwater Road, outside Lake Oswego. Hayes and his wife, Margaret H. "Maggie" Hayes, 57, had just returned from a morning walk when they confronted a man in their kitchen armed with a knife and a machete. Maggie Hayes ran out, then found her husband at their front door, dying.

Status: Erik John Meiser, 38, a former neo-Nazi with an extensive criminal record, was arrested Sept. 22 outside a Corvallis motel. He has been charged with aggravated murder, robbery and burglary. He has been sent to the Oregon State Hospital, where his mental fitness to stand trial is being evaluated.

Whitney Heichel, 21, of Gresham, a Starbucks barista active in Jehovah's Witnesses, was shot and killed at Roslyn Lake on Oct. 16 after she was kidnapped and sodomized. Her body was found four days later on Larch Mountain, where it had been dumped.

Status: Jonathan Daniel Holt, 25, of Gresham, a neighbor and fellow church member, has been charged with aggravated murder, burglary, kidnapping and sodomy. He was arrested Oct. 21 after telling police that he waited outside Heichel's apartment about 6:45 a.m. and asked her for a ride. He then pulled a gun and forced her to drive to Roslyn Lake before killing her and concealing her body on Larch Mountain. Trial is set for April 1.

Donna Irene Tennant, 64, of Milwaukie, a longtime Multnomah County courthouse employee, was found stabbed to death Dec. 10 in the bedroom of her home in the 2800 block of Southeast Monroe Street. Police found her while making a welfare check after she did not show up for work or answer her phone.

Status: Andrew Arjune Tiyler Johnson, 17, Tennant's grandson, who formerly lived with her, has been charged with murder in her death. After finding Tennant's body, police quickly identified Johnson as a suspect and arrested him. According to court documents, Johnson confessed to killing his grandmother on Dec. 8. He is set to be tried as an adult Feb. 1.

Steven Matthew Forsyth, 45, of West Linn and Cindy Ann Yuille, 54, of Northeast Portland were gunned down at Clackamas Town Center during a Dec. 11 shooting rampage. Forsyth, a marketing executive and youth sports coach, and Yuille, a hospice nurse for Kaiser Permanente, were at the mall's food court when the shooting broke out. Status: Jacob Tyler Roberts, 22, of Southeast Portland, who also wounded 15-year-old Kristina Shevchenko of Southeast Portland, killed himself after the shootings, which threw the mall into chaos. Police say Roberts stole the AR-15 rifle he used but still are investigating the incident and have not released a motive.